Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly intelligent creatures, capable of complex hunting strategies. They also engage ...

Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called resident orcas, stay in such large family groups ...

Detached orca fins scored with distinctive tooth marks suggest that killer whale cannibalism is happening — and it might ...

Researchers come 'eye-to-eye with a killer whale' during their Antarctic expedition.

KILLER whales have broken into an all out cannibalistic civil war, scientists believe. Biologists have warned of an all-out orca-on-orca battle being fought in the North Pacific where one deadly ...

New Canadian-led research into northern resident killer whales suggests even when food is plentiful, orca moms struggle to ...

He helped fight to free the whales known as the Budd Inlet Six. It was the last time orcas were captured in United States ...

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, ...

Proposed changes to the federal Marine Mammal Regulations would increase the distance boats are allowed to approach southern resident killer whales from 200 metres to 1,000 metres.

"The whales generated so much excitement in the community with thousands of people getting to see them from all over." ...

A pod of Orcas (Orcinus orca), also known as Killer Whales, feeding, in the Atlantic Ocean. There is a small baby orca amongst them, clearly visible in the image, with its head up. A group of ...